A Clockwork Orange is a 1962 novel by Anthony Burgess. It tells the dystopian story of a teenage boy Alex, his violent and unlawful lifestyle, the effort of the state to reform him and henceforth the consequences.

The title is taken from an old Cockney expression, "as queer as a clockwork orange", and alludes to the prevention of the main character's exercise of his free will by the positively conditioned responses to evil feelings. Written from the perspective of a seemingly biased and unapologetic protagonist, the novel also contains an experiment in language: Burgess creates a new speech that is the teenage slang of the not-too-distant future.